【摘要】 基于车辆动荷载的特点和我国车辆普遍超载的现状,将车辆动荷载等效简化为静荷载,并假定了简化后等效静荷载的3种分布形式:集中分布、矩形分布和带状分布。依据Boussinesq解答和Flamant解答推导出3种分布形式下的计算公式,再应用分层总和法计算车辆动荷载作用下公路软土地基的沉降量。以沪宁高速公路4个断面为例,应用拟静力法研究了3种荷载分布形式下车辆动荷载对高速公路软土地基沉降的影响,研究结果表明:由超重车辆引起的地基沉降量可以达到厘米量级,车辆荷载的影响深度大约在12 m范围以内。更多还原

【Abstract】 Based on the characteristic of vehicle loads and the actuality of over loading of most vehicles in China,vehicle loads are simplified as equivalent static load which was assumed as three kinds of distribution forms: concentrated distribution,rectangle distribution and zonal distribution;and their computational formula were educed respectively by using Boussinesq and Flamant answers.And then the lay wise summation method was applied to calculate the settlement of highway in soft ground induced by super-heavy vehicle loads.By applying the quasi-static method,the influence of settlement of highway on the soft ground induced by super-heavy vehicle loads performed on four sections of Shanghai-Nanjing highway were studied in the three different distribution forms of vehicle loads,which indicate that the settlement can reach to several centimeters and the depth influenced by super-heavy vehicle loads is about 7.1-11.9 m.更多还原